virtManager: show correctly IPv6 addresses

VirtualConnection.get_uri_host_port already splits this information
taking care of IPv6 addresses, do not split it again.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1094631

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>

virtManager/connection.py

@@ -382,10 +382,6 @@ class vmmConnection(vmmGObject):
             transport = scheme.split("+")[1]
             scheme = scheme.split("+")[0]
 
-        if hostname.count(":"):
-            port = hostname.split(":")[1]
-            hostname = hostname.split(":")[0]
-
         if hostname:
             if show_user and username:
                 hostname = username + "@" + hostname